Results 21 to 30 of about 4,685,422 (297)

Simplified Brillouin Optical Correlation-Domain Reflectometry Using Polymer Optical Fiber

open access: yesIEEE Photonics Journal, 2015
To perform distributed strain and temperature measurement, we have recently developed simplified Brillouin optical correlation-domain reflectometry (S-BOCDR), in which the light that is Fresnel reflected at the ends of the fiber under test (FUT) is used ...
Neisei Hayashi   +2 more
doaj   +1 more source

A fast calibration method for distributed measurement systems

open access: yesAIP Advances, 2023
Aiming at the distributed measurement system multi-equipment coordinated measurement, the data measured by each transmitting station are unified under a common coordinate system, which has the problems of complicated operation and high time and cost.
Qing Liu   +5 more
doaj   +1 more source

Distributed Optical Measurement System for Plate Fin Heat Exchanger

open access: yesSensors, 2023
The acquirement of the flow information in plate-fin heat exchanger (PFHE) is limited by its metal structure and complex flow condition. This work develops a new distributed optical measurement system to obtain flow information and boiling intensity. The
Huajun Li   +3 more
doaj   +1 more source

Simplified Configuration of Brillouin Optical Correlation-Domain Reflectometry

open access: yesIEEE Photonics Journal, 2014
We develop a simple and cost-efficient configuration of Brillouin optical correlation-domain reflectometry (BOCDR), the setup of which does not include an additional reference path used in standard BOCDR systems.
Neisei Hayashi   +2 more
doaj   +1 more source

Distributed Compression Estimation Algorithm Based on Measurement Matrix Optimization [PDF]

open access: yesJisuanji gongcheng, 2018
In order to solve the problem of effective data estimation in distributed measurement of Wireless Sensor Network(WSN),a Distributed Compression Estimation Algorithm for Measurement Matrix Optimization(MMDCE) is proposed.It performs the distributed ...
LIU Yun,CHEN Qian
doaj   +1 more source

Slope-Assisted Brillouin Optical Correlation-Domain Reflectometry: Proof of Concept

open access: yesIEEE Photonics Journal, 2016
Exploiting the slope of the Brillouin gain spectrum, we develop a new configuration of Brillouin optical correlation-domain reflectometry, which can measure strain (or temperature) and optical loss distributions simultaneously with a high sampling rate ...
Heeyoung Lee   +3 more
doaj   +1 more source

Measurement Error Estimation for Distributed Smart Meters Through a Modified BP Neural Network

open access: yesFrontiers in Energy Research, 2022
Smart meters generally suffer degradation of metering accuracy and performance due to aging, faults, and other factors, which, however, are difficult to detect.
Tian Xia   +5 more
doaj   +1 more source

Quantum cloning and distributed measurements [PDF]

open access: yesPhysical Review A, 2001
We study measurements on various subsystems of the output of a universal 1 to 2 cloning machine, and establish a correspondence between these measurements at the output and effective measurements on the original input. We show that one can implement sharp effective measurement elements by measuring only two out of the three output systems. Additionally,
Bruss, Dagmar   +2 more
openaire   +2 more sources

Research Progress of Applying Distributed Fiber Optic Measurement Technology in Hydraulic Fracturing and Production Monitoring

open access: yesEnergies, 2022
With the exploration and development of unconventional oil and gas resources, downhole environmental monitoring and data-analysis technologies are becoming more and more important.
Yilin Wang, Zhuoping Wu, Fuyong Wang
doaj   +1 more source

Distributed Optimal and Self-Tuning Filters Based on Compressed Data for Networked Stochastic Uncertain Systems with Deception Attacks

open access: yesSensors, 2022
In this study, distributed security estimation problems for networked stochastic uncertain systems subject to stochastic deception attacks are investigated.
Yimin Ma, Shuli Sun
doaj   +1 more source

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